Скачать с ютуб Keum-Boo prototype miniature hotplate. Please read description as you might be wasting your time. в хорошем качестве

Keum-Boo prototype miniature hotplate. Please read description as you might be wasting your time.

Keum-Boo prototype miniature hotplate. (Successful heat trial, prototype only!!) Please read the beginning of the description as you might be wasting your time looking at this. In this video I share with you a successful heating demonstration of a very tiny prototype hotplate that I’ve put together specifically for use in the Keum-Boo process. That is the low temperature fusion bonding of high carat gold onto the surface of either fine silver or adequately pickled Sterling Silver. I stress that I have never carried out this process but I intend to do so very soon. As an engineer I understand the requirement to do this all be it with the vagueness about what specific temperature is required. The best I can establish is that a temperature of 260 to 370 degrees centigrade (500 to 700 degrees Fahrenheit) is required. Folks seem to think that if the hotplate is hot enough to make the end of a wooden toothpick smoke, then that’s hot enough, I bow to their superior knowledge, like I say, I’ve not done it yet. So why am I making a little heater? Typically, folks use a 6-inch diameter 1,000Watt hot plate to process a piece of jewellery that is less than a square inch (25mm x 25mm) and heat is radiating off at an alarming rate turning it into a bit of an uncomfortable process. My aim was to make a miniature prototype heater that would be plenty adequate for my little hobby requirement. I’ll probably move on to another hobby but as an inventor this sort of a project, (distraction,) is tremendously interesting to me, and just maybe some enterprising soul will pick up on my idea and make a commercially available unit, wouldn’t that be nice. Remember you saw it here first. The power supply that I'm using runs at a maximum output of 3 amps at 30 volts (90 watts) the working surface area of my hotplate is 30 X 30 mm (1-3/8 x 1-3/8 inches) so I’m getting 64.6 watts per square inch. A 6-inch diameter hot plate works at 8.8 watts per square inch. So if a 6 inch plate running at 8.8 watts per square inch is adequate for the job then I could make a slightly larger area prototype but I have to take into consideration heat loss around the edges of the element block, something for me to think about in the middle of the night. It’s all so exciting, I don’t get a lot of sleep. By the way, I haven’t established the maximum temperature that my prototype can achieve but I was happy that I easily achieved the maximum temperature I require and I know that I can simply turn the voltage down to control the temperature. Anyway, I wanted to share this with you and maybe someone will improve on the notion. I was going to edit this video down but I decided to leave it as a one take video so that you see it all. It took about 5 minutes 20 seconds to reach the target temperature of 370 degrees C (700 degrees F) My little heater radiates less than one tenth of the energy that a 6 inch hotplate throws at you. I hope that was interesting.. . . Thanks for watching. All the very best to all. Kind regards . . . Andy.